Perceptual reversals of Necker stimuli during intermittent presentation with limited attentional resources.
Perceptual reversals of Necker stimuli during intermittent presentation with limited attentional resources.
复制标题
在注意力资源有限的间歇性演示过程中，内克刺激的知觉逆转。
作者：
M. Intaitė;M. Koivisto;A. Revonsuo
在长时间观察模糊的刺激，如内克尔立方体，突然知觉逆转发生从一个知觉解释到另一个。注意力在这种逆转中的作用尚不清楚。我们测试知觉逆转是否依赖于注意力资源，通过操纵知觉负荷和记录事件相关电位（ERP）在间歇性呈现的内克尔刺激。结果表明知觉负荷对翻转频率没有影响。ERPs显示，知觉负荷影响P1时间窗（110-140 ms）内顶中央区的电生理活动，但负荷并不改变早期（30-140 ms）的正性增强，这与枕颞区的知觉逆转有关。我们的结论是，消除歧义的数字是基于早期的机制，可以有效地工作，只有最小量的注意力资源。
During prolonged viewing of ambiguous stimuli, such as Necker cubes, sudden perceptual reversals occur from one perceptual interpretation to another. The role of attention in such reversals is not clear. We tested whether perceptual reversals depend on attentional resources by manipulating perceptual load and recording event-related potentials (ERPs) during intermittent presentation of Necker stimuli. The results did not reveal any influence for perceptual load on the frequency of reversals. The ERPs showed that perceptual load influenced electrophysiological activity over parieto-central areas in the P1 time window (110-140 ms), but load did not modify the early enhancements of positivity (30-140 ms), which correlated with perceptual reversals at occipito-temporal sites. We conclude that disambiguation of ambiguous figures is based on early mechanisms that can work efficiently with only a minimal amount of attentional resources.
影响因子：
1.8
作者：
Meier, Philip;Reinagel, Pamela
通讯作者：
Reinagel, Pamela